Gavin is going to multiply - 1 by itself a number of times. Which expression
results in a product of 1?
A. -1:-1:-1
B.
-1:-1:-1:-1
C. -1:-1:-1:-1:-1
D. -1:-1:-1:-1:-1:-1:-1

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.